Vexy is a character who appears in The Smurfs 2 as a main character. She is Smurfette and Hackus's sister who originally was a Naughty created by Gargamel to serve him and his evil purposes, which include capturing Smurfette so that she would give the evil wizard the secret formula that would change the Naughties into Smurfs. However, when she and Hackus did become Smurfs, they would soon be used as part of Gargamel's Smurfalator for extracting Smurf essence. After she returns to the Smurf Village, she sings the song "Ooh La La" and Grouchy Smurf falls in love with her. She also makes a cameo appearance in The Smurfs: The Legend Of Smurfy Hollow and an appearance in the Smurfs' Village app for iPhone and iPad.
Vexy is voiced by actress Christina Ricci.
Like Smurfette, Vexy was a Naughty with pale gray skin and blue eyes. However, she has short, black hair with bangs parted from the left with a blue streak starting from the root to the end of her hair. Her attire consisted of dark gray sock hat on her head, a sleeveless vermillion dark red-striped shirt, a layered skirt with a black mesh layer over an indigo layer, a blue jeweled bracelet belt, black tights, and black midwedged flats. After Gargamel performed a spell from the formula by Smurfette, Vexy now has blue skin.